import java.util.*;

public class Main {

    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);

        while (scanner.hasNext()) {
            int n = scanner.nextInt();
            List<String> list = new LinkedList<>();
            W : for (int i = 0; i < n; ++i) {
                String s = scanner.next();
                for(String t : list) {
                    if(t.contains(s) && t.length() == s.length() * 2)
                        continue W;
                }
                list.add(s + s);
            }

            System.out.println(list.size());
        }
    }
}
